Protecting covering for piles or the like.



No. 73%5118; PATENTBD AUG. 25, 1903..

1 0. A. STEMPEL.

PROTECTING COVERING FOR PILES OR THE LIKE.

APPLICATION FILED AUG. 9, 19oz. :0 MODEL. I

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fbl'o. 737,518

Uivrrnn STATES ratented August 25, 1901;.

PATENT OFFICE.

OMAR A. STEMPEL, OF LAKELAND, FLORIDA, ASSIGNOR OF ONE-HALF TO CHARLES M. MARSH, OF LAKELAND, FLORIDA.

PROTECTING COVERING FOR PILES OR THE LIKE.

SPECIFICATION forming part of Letters Patent No. 737,518, dated August 25,1903.

Application filed August 9, 1902. Serial No. 119,081. (No model.)

To aZZ whom, it may concern:

Be it known that I, OMAR A. STEMPEL, a citizen of the United States, residing at Lakeland, in the county of Polk and State of Florida,

have invented new and useful Improvements in Means for Securing a Protective Covering to Piles or the Like, of which the following is a specification.

This invention relates to a protective means for piles, ships hulls, and other devices exposed to the destructive influence'of the teredo and barnacle; and the primary object of the same is to provide a simple and effective means for holding a covering of a suitable preservative composition-such as asphaltum, cement, or any other composition having the necessary prerequisites for the purposethe said means being of such nature as to prevent the covering from becoming dislodged or loosened by diiferent strains or vibrations to which the object inclosed or partially inclosed may be subjected.

The invention consists in the construction and arrangement of the several parts, which will be more fully hereinafter described and claimed.

In the drawings, Figure 1 is a perspective view of a pile, showing the protective covering applied thereon and held thereto by the improved securing means. Fig. 2 is a horizontal section on the line 2 2, Fig. 1. Fig. 3 is a transverse vertical section through a portion of the pile, showing a slight modification in the formation of the securing means.

Similar numerals of reference are employed to indicate corresponding parts in the several views.

The numeral 1, Figs. 1, 2, and 3, designates a pile of ordinary form and of any suitable length and having applied theretoa protective covering 2 over that portion thereof which is exposed to water to preserve the wood and obstruct decay, as well as serious results arising from the effect of attack by the teredo and barnacle. The protective covering 2 may be asphaltum, which has many advantages for this purpose in view of its inherent elasticity and consequent capability of taking up or absorbing vibration or shock due to the driving of the pile without liability of fracture or dislodgment of, such material. The covering, however, may also consist of a suitable hydraulic cement or a composition of materials adapted for the purpose; and the essential feature of the invention resides in the formation of'a series of longitudinally-extending dovetail grooves 3, having their contracted portions outermost. A modification embodying the same principle is shown by Fig. 3, wherein a series of dovetail grooves 4. circum scribe or circumferentially surround the pile, I

form keys 5, which will effectually lock or.

secure the covering to the pile when the com position or individual material hardens.

As before explained, asphaltum or some analogous inherent elastic material is preferred in view of the capability of the same to withstand vibration or 3' ar without fracture; but the nature of the material and the thickness of the covering will depend largely upon the location in which the pile is used or the excessive or limited presence of the teredo and barnacle. In localities where the teredo and barnacle are present to any material extent the covering 2 will serve as a preservative means for preventing decay or rotting of the wood.

The composition or material used in form ing the covering for either a pile or the hull'of a vessel may include copper, and, as before indicated, the success of the improvement is not limited to the use of any particular material.

It is also intended to similarly cover buoys and other devices submerged in water and subject to attack by the teredo and barnacle, and to accommodate objects or devices of different natures it will be understood that the grooves maybe varied in proportions and dimensions in accordance with the. size of the object or device to which the covering is to be applied.

In preparing a pile or other device to receive the protective covering heretofore set forth it will be fully treated by an application thereto of asphaltum paint 8,which will be run into the grooves as well as the outer surface of the pile or other device, and a more reliable 1 adhesion of the protective covering will result by being applied directly to the asphaltum paint.

By the use of a protective paint 011 the pile before the outer plastic covering is applied moisture which might by any possible chance pass through the said plastic covering is prevented from attacking the fiber of the pile and rotting the same, and thereby the pile will be preserved for a greater length of time. The outer covering of plastic materialwill be of such nature as to resist shocks or jars; but in view of a possible fracture the protective paint is used for the purpose just mentioned. Moreover, by the use of the protective paint the plastic covering is caused to more firmly adhere to the pile and is not liable to become loose.

Having thus described the invention, what is claimed as new is 1. A pile having a series of longitudinallyextending dovetail seats in the outer portion thereof, the seats and surface of the pile between the'latter being coated with a protective paint, and an outer plastic covering applied over the coating and pressed into the seats.

2. A pile having a series of longitudinallyextending closely-arranged dovetail seats intersected by closely-arranged circumferential seats of a similar form, and an outer covering of plastic material applied over the pile and pressed into both sets of seats.

In testimony whereof I affix my signature in presence of two witnesses.

OMAR A. STEMPEL.

Witnesses:

IRVING J. KING, GEORGE M. Bonn. 

